EP1904557B2 - Aldehyd-funktionelle siloxane - Google Patents

Aldehyd-funktionelle siloxane Download PDF

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Publication number
EP1904557B2
EP1904557B2 EP06784596.6A EP06784596A EP1904557B2 EP 1904557 B2 EP1904557 B2 EP 1904557B2 EP 06784596 A EP06784596 A EP 06784596A EP 1904557 B2 EP1904557 B2 EP 1904557B2
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aldehyde
hydrosilylation
aldehyde functional
reaction
group
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EP1904557B1 (de
EP1904557A1 (de
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Lori Jean Sutton
John Joseph Kennan
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Dow Silicones Corp
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Dow Corning Corp
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment

Definitions

  • This invention relates to a process for preparing aldehyde functional organopolysiloxanes.
  • the process involves a hydrosilylation reaction between an aldehyde having a non-conjugated unsaturated group with a polyorganohydrogensiloxane.
  • Aldehyde functional siloxanes are of great interest as commercial intermediates in the silicone industry due to their reactivity and hence versatility to form various organofunctional siloxanes.
  • limited routes to aldehyde functional silicones exist and very few, if any, are presently practiced via large scale industrial processes.
  • aldehyde functional siloxanes One means for preparing aldehyde functional siloxanes involves the reaction of a hydride functional siloxane with an acetal containing an alpha-olefin group, for example J. Org. Chem., (1970) 35(12) 4180 . After the hydrosilylation is complete, the aldehyde is then liberated using an acidic catalyst and water. This reaction is typically biphasic, generates significant amounts of waste by-products and requires multiple steps to recover the desired product.
  • Ozonolysis is another route to aldehyde functional siloxanes. This route involves the exposure of an olefin functional siloxane to ozone to form silicone ozonides. The ozonides can be further reacted under acidic conditions to form aldehydes, see for example US Patent 5,739,246 .
  • aldehyde functional silicones Another possible route to aldehyde functional silicones is the hydrosilylation of aldehydes that also contain other unsaturated carbon-carbon bonds with SiH functional siloxanes. This route would be desirable because of the versatililty of hydrosilylation reactions. However, this route has presumably not been employed due to the competing reaction of the addition of the SiH across the aldehyde carbonyl group resulting in a high percentage of hydrolyzable SiOC bonds.
  • EP0231093 B 1 teaches a method of making aldehyde functional silicone gels by the hydrolysis of acetal and aldehyde functional silanes.
  • US 2,588,083 relates to the preparation of an organosilicon aldehyde by reaction of a alkenylsilicon composition carbon monoxide and hydrogen in the presence of a formylizing catalysts.
  • US 5,021,601 relates to preparation of a polyorganosiloxanes containing propanaldehyde functional groups by hydro-formylation of a polyorganosiloxane in an organic phase by means of a catalyst system which is soluble in the organic phase but insoluble in aqueous phase.
  • DE 103 54 259 relates to a method for producing carbonyl residuals-containing organosilicon compounds consisting in oxidising a residuals-containing organosilicon compounds with the aid of a mediator containing NO, NOH and an oxidising agent.
  • the present inventors have unexpectedly discovered a process to successfully hydrosilylate unsaturated groups on aldehydes, while minimizing the formation of SiOC bonds.
  • This invention relates to a process for preparing aldehyde functional organopolysiloxanes, as set out in claim 1.
  • the products prepared by the process are useful as intermediates to prepare other organofunctional polysiloxanes, but also have utility as additives in various formulations/uses such as in personal, household care, textile/fabric treatments, paper/tissue treatment, other surface treatments, coatings, silicone-organic composites, etc.
  • the process of the present invention further provides aldehyde functional organopolysiloxane, as set out in claim 3.
  • Component A) of the present invention is a polyorganohydrogensiloxane.
  • a polyorganohydrogensiloxane is any organopolysiloxane containing at least one silicon-bonded hydrogen atom (SiH) per molecule.
  • Organopolysiloxanes are well known in the art and are often designated as comprising any number of "M" siloxy units (R 3 SiO 0.5 ), “D” siloxy units (R 2 SiO), “T” siloxy units (RSiO 1.5 ), or “Q” siloxy units (SiO 2 ) where R can independently be any organic group, but commonly R is a hydrocarbon group, and most commonly R is methyl.
  • Polyorganohydrogensiloxanes have similar structures, but have at least one SiH present on a M, D, or T siloxy unit, and can be represented as comprising of "M H " siloxy units (R 2 HSiO 0.5 ), "D H “ siloxy units (RHSiO), “T H “ siloxy units (HSiO 1.5 ).
  • the polyorganohydrogensiloxanes useful in the present invention have an average formula of: or a combination thereof, where m, p, and t > 0, n and s ⁇ 0, and R 1 is a monovalent hydrocarbon.
  • Component B) in the present invention is 10-undecenal or 2,4-diethyl-2,6-heptadienal.
  • hydrosilylations are known in the art and require the addition of an appropriate catalyst.
  • Suitable hydrosilylation catalysts for use in the present invention are known in the art and many are commercially available. Most commonly, the hydrosilylation catalyst is a platinum group metal and is added in an amount of 0.1 to 1000 ppm based on the weight of the reactants A) and B), alternatively 10 to 100 ppm of the platinum group metal.
  • the hydrosilylation catalyst may comprise a platinum group metal selected from platinum, rhodium, ruthenium, palladium, osmium or iridium metal or organometallic compound thereof, or a combination thereof.
  • the hydrosilylation catalyst is exemplified by compounds such as chloroplatinic acid, chloroplatinic acid hexahydrate, platinum dichloride, and complexes of said compounds with low molecular weight organopolysiloxanes or platinum compounds microencapsulated in a matrix or coreshell type structure.
  • Complexes of platinum with low molecular weight organopolysiloxanes include 1,3-diethenyl-1,1,3,3 -tetramethyldisiloxane complexes with platinum. These complexes may be microencapsulated in a resin matrix.
  • Suitable hydrosilylation catalysts are described in, for example, U.S. Patents 3,159,601 ; 3,220,972 ; 3,296,291 ; 3,419,593 ; 3,516,946 ; 3,814,730 ; 3,989,668 ; 4,784,879 ; 5,036,117 ; and 5,175,325 and EP 0 347 895 B .
  • the hydrosilyation reaction can be conducted neat or in the presence of a solvent.
  • the solvent can be an alcohol such as methanol, ethanol, isopropanol, butanol, or n-propanol, a ketone such as acetone, methylethyl ketone, or methyl isobutyl ketone; an aromatic hydrocarbon such as benzene; toluene, or xylene; an aliphatic hydrocarbon such as heptane, hexane, or octane; a glycol ether such as propylene glycol methyl ether, dipropylene glycol methyl ether, propylene glycol n-butyl ether, propylene glycol n-propyl ether, or ethylene glycol n-butyl ether, a halogenated hydrocarbon such as dichloromethane, 1,1,1-trichloroethane or methylene chloride, chloroform, dimethyl
  • the amount of solvent can be up to 50 weight percent, but is typically from 20 to 50 weight percent, said weight percent being based on the total weight of components in the hydrosilylation reaction.
  • the solvent used during the hydrosilylation reaction can be subsequently removed from the resulting reaction product mixture by various known methods.
  • the amount of components A) and B) used in the hydrosilylation reaction can vary, and typically the amounts used are expressed as the molar ratio of the unsaturated group in component B) vs the SiH content of component A).
  • the hydrosilylation reaction is conducted with a slight molar excess of the unsaturated group vs SiH to ensure complete consumption of the SiH in the hydrosilylation reaction.
  • the hydrosilylation reaction is conducted with a 20%, alternatively 10%, alternatively 5%, or alternatively 1% molar excess of the unsaturated group vs the molar SiH content of the polyorganohydrogensiloxane.
  • the process of the present invention further provides aldehyde functional organopolysiloxanes according to claim 3.
  • the weight average molecular weight (M w ) or number average molecular weight (M N ) of the aldehyde functional organopolysiloxane can vary, and is not limiting.
  • the amount of the aldehyde functional groups (R 2 ) present in the organopolysiloxanes of the present invention can vary, but typically ranges from 0.1 to 40 mass percent, alternatively from 1 to 30 mass percent, or alternatively from 5 to 20 mass percent of the total mass of the organopolysiloxane.
  • the aldehyde functional organopolysiloxanes of the present invention have the average formula; where m, p, and t > 0, n and s ⁇ 0, R 1 is a hydrocarbon, and R 2 is -(CH 2 ) 10 C(O)H or -(CH 2 ) 3 CH(CH 2 CH 3 )CHC(CH 2 CH 3 )C(O)H.
  • a 50 mL 3-neck flask was loaded with 17.41 g (24.4 mmol Si-Fi) of a (HMe 2 SiO 0.5 ) terminal siloxane, 5.00 g (29.7 mmol) of 10-undecenal, and 5.60 g of toluene and stirred under static nitrogen, the mixture was then heated to -90 °C, at which time 66.7 ⁇ L ( ⁇ 0.0017 mmol Pt) of Karstedt's catalyst (platinum complexed to 1,3-divinyl-1,1,3,3-tetramethyldisiloxane) was added. The reaction mixture was then heated to reflux.
  • Karstedt's catalyst platinum complexed to 1,3-divinyl-1,1,3,3-tetramethyldisiloxane

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Silicon Polymers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (3)

  1. Verfahren zur Herstellung eines aldehydfunktionellen Organopolysiloxans, umfassend Umsetzen von:
    A) einem Polyorganowasserstoffsiloxan und
    B) einem Aldehyd mit einer nichtkonjugierten ungesättigten Gruppe,
    über eine Hydrosilylierungsreaktion,
    wobei das Polyorganowasserstoffsiloxan ausgewählt ist aus der Gruppe mit einer mittleren Formel von:
    Figure imgb0019
    Figure imgb0020
    Figure imgb0021
     oder einer Kombination davon, wobei m, p und t > 0, n und s ≥ 0 sind, R1 eine monovalente Kohlenwasserstoffgruppe ist, und worin der Aldehyd 10 -Undecenal oder 2,4-Diethyl-2,6-heptadienal ist.
  2. Verfahren nach Anspruch 1, wobei R1 Methyl ist.
  3. Organopolysiloxan, wobei das Organopolysiloxan die mittlere Formel;
    Figure imgb0022
    Figure imgb0023
     oder
    Figure imgb0024
     aufweist, worin m, p, und t > 0, n und s ≥ 0 sind, R1 eine monovalente Kohlenwasserstoffgruppe ist, und
    R2 -(CH2)10C(O)H oder -(CH2)3CH(CH2CH3)CHC(CH2CH3)C(O)H ist.
EP06784596.6A 2005-07-18 2006-07-05 Aldehyd-funktionelle siloxane Active EP1904557B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US70036205P 2005-07-18 2005-07-18
PCT/US2006/021855 WO2007011465A1 (en) 2005-07-18 2006-07-05 Aldehyde functional siloxanes

Publications (3)

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EP1904557A1 EP1904557A1 (de) 2008-04-02
EP1904557B1 EP1904557B1 (de) 2011-08-24
EP1904557B2 true EP1904557B2 (de) 2016-02-17

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US (1) US7999053B2 (de)
EP (1) EP1904557B2 (de)
JP (1) JP4981045B2 (de)
CN (1) CN101218282B (de)
AT (1) ATE521655T1 (de)
WO (1) WO2007011465A1 (de)

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CN107001637B (zh) 2014-09-23 2021-06-15 迈图高新材料股份有限公司 用于处理基于氨基酸的底物的硅氧烷化合物及其组合物
US11179312B2 (en) 2017-06-05 2021-11-23 Momentive Performance Materials Inc. Aqueous compositions for the treatment of hair
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JP7499250B2 (ja) 2018-12-21 2024-06-13 ダウ シリコーンズ コーポレーション 多官能性オルガノシロキサン、それを含有する組成物、及びその調製方法
EP3898776B1 (de) 2018-12-21 2023-03-01 Dow Silicones Corporation Polyfunktionale organosiloxane, zusammensetzungen damit und verfahren zur herstellung davon
JP2022515367A (ja) 2018-12-21 2022-02-18 ダウ シリコーンズ コーポレーション 多官能性オルガノシロキサンの製造方法及びそれを含有する組成物
EP4229066A1 (de) 2020-10-13 2023-08-23 Dow Silicones Corporation Herstellung von organosiliziumverbindungen mit aldehydfunktionalität
CN118019747A (zh) 2021-10-06 2024-05-10 陶氏环球技术有限责任公司 丙基亚胺官能化有机硅化合物和伯氨基丙基官能化有机硅化合物的制备
KR20240074835A (ko) 2021-10-06 2024-05-28 다우 글로벌 테크놀로지스 엘엘씨 아미노-작용성 유기규소 화합물의 제조
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KR20240101860A (ko) 2021-11-22 2024-07-02 다우 글로벌 테크놀로지스 엘엘씨 카르비놀 관능기를 갖는 유기규소 화합물의 제조
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WO2023201146A1 (en) 2022-04-13 2023-10-19 Dow Global Technologies Llc Preparation of organosilicon compounds with vinylester functionality
WO2023201138A1 (en) 2022-04-13 2023-10-19 Dow Global Technologies Llc Preparation of polyether-functional organosilicon compounds
WO2023204136A1 (ja) * 2022-04-21 2023-10-26 信越化学工業株式会社 アルデヒド変性シリコーン及びその製造方法

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CN101218282A (zh) 2008-07-09
ATE521655T1 (de) 2011-09-15
JP2009501837A (ja) 2009-01-22
CN101218282B (zh) 2012-03-28
US7999053B2 (en) 2011-08-16
JP4981045B2 (ja) 2012-07-18
US20090137764A1 (en) 2009-05-28
EP1904557B1 (de) 2011-08-24
WO2007011465A1 (en) 2007-01-25
EP1904557A1 (de) 2008-04-02

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